Foldable Collapsible Portable Silicone Sport Water Bottles 620ml BPA Free for Traveling, Outdoor, Camping, Hiking, Backpacking, Running HEALTHY AND SAFE - FDA approved. Made from Food Quality Nano Silica Gel. BPA Free and Non-Toxic. HEAT AND COLD RESISTANT - This bottle is heat and cold resistant and not easy to crack. Can be used under almost every environment from - 40 Degree F to 480 Degree F. SEAL AND WATERPROOF - Double Leak-proof Design, Well Sealed and 100% waterproof. Can be used as a small dry bag when swimming or doing other water sports. EASY TO USE - Rotary valve design. Open and close the valve to make your beverage flow through it or sealed. A wide mouth design also make it easy to fill and pour with water and even ice cubes. Curved body design for a comfortable holding. EASY TO CARRY - Soft and Folding Silicone Water Bottle, Easy to Carry, Can be Stored in Your Bag, Pocket after Folding and not easy to deform. Perfect for running, biking, hiking, camping, picnic, including all sports, outdoor or everyday activities.